WBCS Mains Environment Air Pollution, Smog & Acid Rain Questions 2023

Q. The damage induced by PAN is:

(A) Skin cancer
(B) Eye irritation
(C) Both
(D) Liver cancer

Correct Answer: (B) Eye irritation.

WBCS Mains Environment Air Pollution, Smog & Acid Rain Questions 2022

Q. Which one is not a pollutant normally?:

(A) Hydrocarbon
(B) Carbon dioxide
(C) Carbon monoxide
(D) Sulphur dioxide

Correct Answer: (B) Carbon dioxide.

Q. Which of the following is a secondary pollutant?:

(A) PAN
(B) Aerosol
(C) CO
(D) CO₂

Correct Answer: (A) PAN.

Q. The supersonic jets cause pollution by the thinning of:

(A) O₂ layer
(B) O₃ layer
(C) CO₂ layer
(D) SO₂ layer

Correct Answer: (B) O₃ layer.

Q. Major aerosol pollutant in jet plane emission is:

(A) sulphur dioxide
(B) carbon monoxide
(C) methane
(D) fluorocarbon

Correct Answer: (A) sulphur dioxide.

Q. Photochemical smog is a resultant of the reaction among:

(A) NO₂, O₃ and peroxyacetyl nitrate in the presence of sunlight
(B) CO, O₂ and peroxyacetyl nitrate in the presence of sunlight
(C) CO, CO₂ and NO₂ at low temperature
(D) high concentration of NO₂, O₃, and CO in the evening

Correct Answer: (A) NO₂, O₃ and peroxyacetyl nitrate in the presence of sunlight.

WBCS Mains Environment Air Pollution, Smog & Acid Rain Questions 2021

Q. Tetraethyl lead was coming out from:

(A) Hospital waste
(B) Exhaust of automobile
(C) Waste dumping
(D) Open dumping

Correct Answer: (B) Exhaust of automobile.

Q. Which of the following is called the secondary air pollutant?:

(A) Ammonia
(B) Ozone
(C) Carbon monoxide
(D) Nitrogen dioxide

Correct Answer: (B) Ozone.

Q. Which of the following is a liquid form of aerosol?:

(A) Fume
(B) Dust
(C) Mist
(D) Smoke

Correct Answer: (C) Mist.

WBCS Mains Environment Air Pollution, Smog & Acid Rain Questions 2020

Q. Layer of Ozone is present in:

(A) Stratosphere
(B) Troposphere
(C) Thermosphere
(D) Mesosphere

Correct Answer: (A) Stratosphere.

Q. In which Industry, workers suffer from Byssinosis?:

(A) Cardboard
(B) Textile
(C) Plastic
(D) Paper

Correct Answer: (B) Textile.

WBCS Mains Environment Air Pollution, Smog & Acid Rain Questions 2019

Q. The maximum width of tropopause is:

(A) 10 Km
(B) 15 Km
(C) 20 Km
(D) 25 Km

Correct Answer: (C) 20 Km.

Q. The Thermosphere starts from Earth’s surface at a distance of:

(A) 80 Km
(B) 85 Km
(C) 100 Km
(D) 125 Km

Correct Answer: (A) 80 Km.

Q. Which of the following is a liquid form of aerosol?:

(A) Fume
(B) Dust
(C) Mist
(D) Smoke

Correct Answer: (C) Mist.

Q. Below, which of the following pH in rain regarded as ‘acid rain’?:

(A) 7
(B) 7.3
(C) 5.6
(D) 6

Correct Answer: (C) 5.6.

Q. Which of the following pollutant is the major contributor to photochemical smog?:

(A) Peroxynitrates
(B) Hydroperoxides
(C) Nitrogen dioxide
(D) Ozone

Correct Answer: (C) Nitrogen dioxide.

Q. What is the primary standard level for carbon monoxide for assuring air quality?:

(A) 10 ppm
(B) 90 ppm
(C) 1 ppm
(D) 9 ppm

Correct Answer: (D) 9 ppm.

WBCS Mains Environment Air Pollution, Smog & Acid Rain Questions 2018

Q. Which one of the following is responsible for depletion of O3 layer?:

(A) CO2
(B) Chlorofluoro Carbon
(C) CH4
(D) None of the above

Correct Answer: (B) Chlorofluoro Carbon.

Q. The photochemical smog is generated by:

(A) HCHO
(B) PAN (Peroxy acetyl nitrate)
(C) Acrolin
(D) Moisture

Correct Answer: (B) PAN (Peroxy acetyl nitrate).

Q. Instrument used in industry for purifying air contaminated with dust and smoke:

(A) Scrubber
(B) Blower
(C) Extractor
(D) Electrostatic precipitator

Correct Answer: (D) Electrostatic precipitator.

Q. White lung cancer is caused by:

(A) Asbestos
(B) Silica
(C) Paper
(D) Textile

Correct Answer: (A) Asbestos.

Q. Acidity of normal rain water is due to:

(A) CO
(B) NO
(C) CO2
(D) H2S

Correct Answer: (C) CO2.

Q. Historical monuments and temples are badly damaged due to corrosive action of:

(A) SO2
(B) CO2
(C) NH3
(D) C2H2

Correct Answer: (A) SO2.

WBCS Mains Environment Air Pollution, Smog & Acid Rain Questions 2017

Q. The lower layer Ionosphere is known as:

(A) Troposphere
(B) Stratosphere
(C) Ozonosphere
(D) Thermosphere

Correct Answer: (D) Thermosphere.

Q. Domestic waste causes:

(A) Air pollution
(B) Effluents
(C) Biodegradable pollution
(D) Non-biodegradable pollution

Correct Answer: (C) Biodegradable pollution.

Q. Major aerosol pollutant in jet plane emission is:

(A) Sulphur dioxide
(B) Carbon monoxide
(C) Methane
(D) Fluorocarbon

Correct Answer: (A) Sulphur dioxide.

WBCS Mains Environment Air Pollution, Smog & Acid Rain Questions 2016

Q. Kalundborg model is followed in:

(A) solid waste management
(B) air pollution control
(C) zero waste management
(D) green technology

Correct Answer: (C) zero waste management.

WBCS Mains Environment Air Pollution, Smog & Acid Rain Questions 2015

Q. The following term is not involved in air pollution:

(A) SMOG
(B) MMD
(C) DO
(D) VC

Correct Answer: (C) DO.

Q. Mufflers are commonly used to prevent the:

(A) Radiation pollution
(B) Noise pollution
(C) Air pollution
(D) Thermal pollution

Correct Answer: (B) Noise pollution.

Q. PAN formation does not include:

(A) Nitrogen
(B) Ozone
(C) Hydrogen
(D) Hydrocarbon

Correct Answer: (C) Hydrogen.

Q. The distance of mesosphere from the Earth’s surface is approximately:

(A) 30 Km.
(B) 50 Km.
(C) 70 Km.
(D) 90 Km.

Correct Answer: (D) 90 Km.

Q. Gravity setting chambers are used in industries to remove:

(A) SOx
(B) Suspended particles
(C) NOx
(D) Glass particles

Correct Answer: (B) Suspended particles.

Q. The following organism is an indicator for air pollution:

(A) Algae
(B) Fungi
(C) Lichen
(D) Bryophyte

Correct Answer: (C) Lichen.